--- memtest86+-5.01/Makefile~	2014-01-08 01:30:11.355900076 +0000
+++ memtest86+-5.01/Makefile	2014-01-08 01:31:19.387555469 +0000
@@ -12,7 +12,7 @@
 AS=as -32
 CC=gcc
 
-CFLAGS= -Wall -march=i486 -m32 -O1 -fomit-frame-pointer -fno-builtin \
+CFLAGS= -Wall -march=i486 -m32 -O0 -fomit-frame-pointer -fno-builtin \
 	-ffreestanding -fPIC $(SMP_FL) -fno-stack-protector 
 	
 OBJS= head.o reloc.o main.o test.o init.o lib.o patn.o screen_buffer.o \